A testing device for LED screen production

Abstract

The present invention belongs to the technical field of material testing, and relates to a testing device for LED screen production, including a testing frame, a conveyor belt, an electric guide rail, a sliding mounting block, a fixed mounting plate, a driving mechanism, a clamping mechanism and a testing mechanism, wherein a conveyor belt is installed on the upper part of the testing frame, electric guide rails are installed on both sides of the top of the testing frame, a sliding mounting block is connected to the moving body of the electric guide rail, a fixed mounting plate is connected between the two sliding mounting blocks, a driving mechanism is provided on the fixed mounting plate, a clamping mechanism for clamping the LED screen is provided on the testing frame, and a testing mechanism is provided on the driving mechanism. When the present invention detects the welding firmness of lamp beads, it can simultaneously push a row of lamp beads by pushing the test plates, and can detect a row of lamp beads at a time, which is more efficient.

Description

Technical Field

[0001] The invention belongs to the technical field of material testing and relates to a testing device for LED screen production. Background Art

[0002] With the continuous advancement and development of LED screen technology, LED displays have been widely used in billboards, stage backgrounds, traffic signal indications, etc. due to their advantages such as high brightness, wide viewing angle and long life. In order to ensure the safety and reliability of LED displays in actual use, manufacturers usually conduct a series of rigorous tests on their products, including the detection of the stability of lamp bead welding.

[0003] At present, in the production process of LED screens, the welding performance test of the lamp beads on the LED screen is usually carried out by mechanical equipment to apply thrust to the welded lamp beads to detect whether the LED screen meets the production requirements. The existing detection method usually adopts sampling detection, that is, mechanical equipment is used to push the lamp beads on the LED screen one by one for detection. This method leads to low overall detection efficiency, limited data accuracy of sampling detection, and long time consumption. Summary of the invention

[0004] In view of this, the present invention provides a testing device for LED screen production.

[0005] Technical solution: A test device for LED screen production, comprising a test frame, a conveyor belt, an electric guide rail, a sliding mounting block, a fixed mounting plate, a driving mechanism, a clamping mechanism and a testing mechanism, wherein a conveyor belt is installed on the upper part of the test frame, electric guide rails are installed on both sides of the top of the test frame, a sliding mounting block is connected to the moving body of the electric guide rail, a fixed mounting plate is connected between the two sliding mounting blocks, a driving mechanism is provided on the fixed mounting plate, a clamping mechanism for clamping the LED screen is provided on the test frame, a testing mechanism for testing the LED screen is provided on the driving mechanism, and the driving mechanism comprises a driving mechanism. A driving cylinder and an L-shaped mounting plate, wherein the fixed mounting plate is provided with a driving cylinder, the telescopic rod of the driving cylinder is connected with the L-shaped mounting plate, the L-shaped mounting plate is slidably connected to the fixed mounting plate, the testing mechanism comprises an electric push rod, an extrusion rod, a guide rod, a guide block and a pushing test plate, two electric push rods are installed on the fixed mounting plate, an extrusion rod is connected between the telescopic rods of the two electric push rods, a plurality of guide rods are evenly spaced and slidably connected to the L-shaped mounting plate, a pushing test plate is slidably connected to the guide rod, a guide block is connected to the guide rod, an oblique groove is provided on the guide block, and the extrusion rod passes through the oblique groove on the guide block.

[0006] As a preferred technical solution of the present invention, the clamping mechanism includes a fixed support seat, a clamping plate and a linear guide rod. The fixed support seat is installed on the test frame, the upper part of the test frame is connected to the linear guide rod, and the clamping plate is slidably connected to the linear guide rod.

[0007] As a preferred technical solution of the present invention, the clamping mechanism also includes a threaded conveying rod and a driving motor. The driving motor is installed on the test frame, the output shaft of the driving motor is connected to the threaded conveying rod, and the clamping fixing plate is threadably matched with the threaded conveying rod.

[0008] As a preferred technical solution of the present invention, the testing mechanism also includes an elastic member 1 and a pressure sensor, the push test plate is connected to the elastic member 1, the guide rod is connected to the pressure sensor, and one side of the elastic member 1 is in contact with the sensing end of the pressure sensor.

[0009] As a preferred technical solution of the present invention, it also includes a waste collection mechanism, which includes a lamp bead collection frame, an arc-shaped guide frame, an expansion frame and an air inlet connector. The L-shaped mounting plate is connected to the lamp bead collection frame, the lamp bead collection frame is connected to the arc-shaped guide frame, the feeding end of the arc-shaped guide frame is connected to the expansion frame, the expansion frame is aligned with the bottom of the L-shaped mounting plate, and both sides of the lamp bead collection frame are connected to the air inlet connector.

[0010] As a preferred technical solution of the present invention, it also includes a lamp bead filter, and the lamp bead filter is installed in the air intake connector.

[0011] As a preferred technical solution of the present invention, a test gas spring is also included, and the test gas spring is connected to the bottom of the L-shaped mounting plate at intervals.

[0012] As a preferred technical solution of the present invention, a rubber protective pad is also included, and the rubber protective pad is connected to the side where the fixing plate and the clamping and fixing support seat are close to each other.

[0013] Compared with the prior art, the present invention has the following advantages: 1. When testing the welding firmness of lamp beads, the present invention can push a row of lamp beads at the same time by multiple push test plates to realize the testing of the welding firmness of lamp beads. A row of lamp beads can be tested at one time, which is more efficient and does not require sampling testing, and the test results are more accurate.

[0014] 2. During the detection process, if the lamp beads are broken, the expansion frame can generate negative pressure to suck the broken lamp beads into the lamp bead collection frame, and the broken lamp beads are collected by the lamp bead collection frame to prevent the lamp beads from remaining on the LED screen.

[0015] 3. The present invention can detect the welding firmness of the lamp beads and at the same time, can also test the compressive strength of the lamp beads by squeezing the lamp beads through the test gas spring, thereby detecting the compressive capacity of the lamp beads. There is no need to set up an additional structure to test the compressive capacity of the lamp beads, which simplifies the operation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0017] Figure 2 It is a schematic structural diagram of the driving mechanism and the clamping mechanism of the present invention.

[0018] Figure 3 It is a structural schematic diagram of the clamping mechanism of the present invention.

[0019] Figure 4 It is a structural schematic diagram of the driving mechanism of the present invention.

[0020] Figure 5 It is a structural schematic diagram of the testing mechanism of the present invention.

[0021] Figure 6 It is a cross-sectional view of the testing mechanism of the present invention.

[0022] Figure 7 It is a schematic diagram of the structure of the waste collection mechanism and the lamp bead filter of the present invention.

[0023] Figure 8 It is a cross-sectional view of the waste collection mechanism of the present invention.

[0024] Fig. 9 It is a schematic diagram of the structure of the test gas spring and the L-shaped mounting plate of the present invention.

[0025] Fig.10 It is a schematic structural diagram of the rubber protective pad, the fixed support seat and the clamping fixed plate of the present invention.

[0026] Figure numbers: 1. Test frame, 2. Conveyor belt, 3. Electric guide rail, 4. Sliding mounting block, 5. Fixed mounting plate, 51. Driving cylinder, 52. L-shaped mounting plate, 61. Fixed support seat, 62. Threaded conveying rod, 63. Driving motor, 64. Clamping fixing plate, 65. Linear guide rod, 71. Electric push rod, 72. Extrusion rod, 73. Guide rod, 74. Guide block, 75. Push test plate, 76. Elastic part 1, 8. Pressure sensor, 91. Lamp bead collection frame, 92. Arc guide frame, 93. Extension frame, 94. Air inlet connector, 95. Lamp bead filter, 10. Test gas spring, 11. Rubber protective pad. DETAILED DESCRIPTION

[0027] The present invention will now be described more fully below with reference to the accompanying drawings, in which currently preferred embodiments of the present invention are shown. However, the present invention may be implemented in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided for thoroughness and completeness, and these embodiments fully convey the scope of the present invention to the skilled person.

[0028] A test device for LED screen production, such as Figure 1-Figure 6 As shown, it includes a test frame 1, a conveyor belt 2, an electric guide rail 3, a sliding mounting block 4, a fixed mounting plate 5, a driving mechanism, a clamping mechanism and a testing mechanism. The conveyor belt 2 is installed on the upper part of the test frame 1, and the LED screen is placed on the conveyor belt 2. The LED screen can be transported by the rotation of the conveyor belt 2. The electric guide rails 3 are installed on the front and back sides of the top of the test frame 1. The moving body of the electric guide rail 3 is connected with a sliding mounting block 4, and a fixed mounting plate 5 is connected between the two sliding mounting blocks 4. The fixed mounting plate 5 is provided with a driving mechanism, and the test frame 1 is provided with a clamping mechanism for clamping the LED screen. The driving mechanism is provided with a testing mechanism for testing the LED screen.

[0029] like Figure 2 As shown, the driving mechanism includes a driving cylinder 51 and an L-shaped mounting plate 52. The driving cylinder 51 is installed on the fixed mounting plate 5. The telescopic rod of the driving cylinder 51 is connected to the L-shaped mounting plate 52. The L-shaped mounting plate 52 is slidably connected to the fixed mounting plate 5, so that the sliding of the L-shaped mounting plate 52 is guided by the fixed mounting plate 5.

[0030] like Figure 2 and Figure 3 As shown, the clamping mechanism includes a fixed support seat 61, a threaded conveying rod 62, a driving motor 63, a clamping plate 64 and a linear guide rod 65. The fixed support seat 61 is installed on the upper rear side of the test frame 1, and the driving motor 63 is installed on the upper front side of the test frame 1. The output shaft of the driving motor 63 is connected to the threaded conveying rod 62. The upper part of the test frame 1 is connected to the linear guide rod 65. The linear guide rod 65 is slidably connected to the clamping plate 64. The clamping plate 64 can slide along the axial direction of the linear guide rod 65. The clamping plate 64 is threadedly matched with the threaded conveying rod 62 so that when the threaded conveying rod 62 rotates, the clamping plate 64 can be driven to move back and forth through the thread.

[0031] like Figure 4-Figure 6As shown, the test mechanism includes an electric push rod 71, an extrusion rod 72, a guide rod 73, a guide block 74, an elastic member 76, a push test plate 75 and a pressure sensor 8. Two front and rear electric push rods 71 ​​are installed on the right side of the fixed mounting plate 5. An extrusion rod 72 is connected between the telescopic rods of the two electric push rods 71. A plurality of guide rods 73 are evenly and slidably connected to the L-shaped mounting plate 52. A push test plate 75 is slidably connected to the left side of the guide rod 73. The push test plate 75 is used to push the lamp beads on the LED screen. A guide block 74 is connected to the right side of the guide rod 73. An oblique groove is provided on the guide block 74. The extrusion rod 72 passes through the oblique groove on the guide block 74. An elastic member 76 is connected to the right side of the push test plate 75. The elastic member 76 is a connecting spring. The guide rod 73 is connected to the pressure sensor 8. The right side of the elastic member 76 contacts the sensing end of the pressure sensor 8.

[0032] When it is necessary to test the lamp beads of the LED screen, this device can be used. When in use, first place the LED screen on the conveyor belt 2, and convey the LED screen through the conveyor belt 2 to the lower left side of the fixed installation plate 5, and then control the conveyor belt 2 to stop conveying the LED screen. At this time, the drive motor 63 can be controlled to drive the threaded conveying rod 62 to rotate, and the threaded conveying rod 62 rotates and drives the clamping fixing plate 64 to move backward through the thread, so that the clamping fixing plate 64 cooperates with the fixed support seat 61 to clamp the LED screen. After clamping, Then the driving cylinder 51 can be controlled to drive the L-shaped mounting plate 52 to move downward, and the downward movement of the L-shaped mounting plate 52 can drive the push test plate 75 to move downward. After the push test plate 75 moves downward, it is located on the left side of the LED screen lamp bead. At this time, the telescopic rod of the electric push rod 71 can be controlled to move downward. The telescopic rod of the electric push rod 71 can drive the extrusion rod 72 to move downward when it moves downward. When the extrusion rod 72 moves downward, it can squeeze the guide block 74 to move to the left through the inclined groove. When the guide block 74 moves, it can drive the guide rod 73 to move to the left. When the guide rod 73 moves to the left, it can squeeze the guide block 74 to move to the left through the elastic member. The elastic member 76 squeezes and pushes the test plate 75 to move to the left. When the test plate 75 moves to the left, it can apply pressure to the lamp beads of the LED screen. At the same time, the elastic member 76 will be compressed. When the elastic member 76 is compressed, it will apply pressure to the pressure sensor 8, so that the pressure sensor 8 can detect the pressure. When the telescopic rod of the electric push rod 71 is extended to a predetermined stroke, if the lamp beads of the LED screen are not broken along the welding part, it means that the welding of the lamp beads of the LED screen is qualified. If they are broken, it means that the welding of the lamp beads of the LED screen is unqualified. Then the telescopic rod of the electric push rod 71 is extended to a predetermined stroke. The rod retracts to its original position to drive the guide block 74 and the guide rod 73 to reset, and then the telescopic rod of the driving cylinder 51 is controlled to retract to drive the L-shaped mounting plate 52 to move up. After moving up, the electric guide rail 3 is controlled to drive the sliding mounting block 4 to move left so that the push test plate 75 is located at the upper right of the next row of lamp beads. At this time, the test can be performed again according to the above operation. By repeating this process, the welding firmness of the lamp beads of the LED screen can be tested. During the test, the same pressure is applied to multiple push test plates 75 to squeeze the lamp beads for testing, which can achieve batch testing and higher testing efficiency.

[0033] like Figure 7 and Figure 8 As shown, a waste collection mechanism is also included, which includes a lamp bead collection frame 91, an arc-shaped guide frame 92, an expansion frame 93 and an air inlet connector 94. The left side of the L-shaped mounting plate 52 is connected to the lamp bead collection frame 91, the left side of the lamp bead collection frame 91 is connected to the arc-shaped guide frame 92, the feeding end of the arc-shaped guide frame 92 is connected to the expansion frame 93, the expansion frame 93 is aligned with the bottom of the L-shaped mounting plate 52, and the front and rear sides of the lamp bead collection frame 91 are connected to the air inlet connector 94.

[0034] like Figure 8 As shown, a lamp bead filter 95 is also included, and the lamp bead filter 95 is installed in the air intake connector 94.

[0035] When using this device, an external suction pipe can be connected to the air inlet connector 94, and the external suction machine can be controlled to operate so that negative pressure is generated at the expansion frame 93. During the test, if any lamp beads are broken along the welding points, the lamp beads will be sucked into the lamp bead collection frame 91 through the expansion frame 93 and the arc guide frame 92. The broken lamp beads are collected by the lamp bead collection frame 91, and the lamp bead filter 95 can block the lamp beads to prevent them from entering the suction pipe.

[0036] like Fig. 9 As shown, a test gas spring 10 is also included. The test gas spring 10 is connected to the bottom of the L-shaped mounting plate 52 at intervals. When the test plate 75 is pushed to move to the next row of lamp beads, the test gas spring 10 is located above the previously tested lamp beads. At this time, the downward movement of the L-shaped mounting plate 52 can drive the test gas spring 10 to move downward and contact the previous row of lamp beads, thereby performing a pressure test on the lamp beads to test their pressure resistance. If the lamp beads are broken, it means that their pressure resistance is unqualified.

[0037] like Fig.10 As shown, a rubber protective pad 11 is also included. The rubber protective pad 11 is connected to the side where the fixed support seat 61 and the clamping fixing plate 64 are close to each other. The rubber protective pad 11 can provide buffering protection for the LED screen when the clamping fixing plate 64 and the fixed support seat 61 clamp the LED screen to prevent the LED screen from deformation.

[0038] The above-mentioned embodiments only express the preferred implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person skilled in the art, several modifications, improvements and substitutions can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the attached claims.

Claims

1. A test device for LED screen production, characterized in that it includes: A test frame (1), a conveying belt (2), an electric guide rail (3), a sliding mounting block (4), a fixed mounting plate (5), a driving mechanism, a clamping mechanism and a testing mechanism. The test frame (1) is provided with a conveying belt (2) on the upper part, the electric guide rails (3) are installed on both sides of the top of the test frame (1), the moving body of the electric guide rail (3) is connected to the sliding mounting block (4), the two sliding mounting blocks (4) are connected to the fixed mounting plate (5), the fixed mounting plate (5) is provided with a driving mechanism, the test frame (1) is provided with a clamping mechanism for clamping an LED screen, the driving mechanism is provided with a testing mechanism for testing the LED screen, the driving mechanism comprises a driving cylinder (51) and an L-shaped mounting plate (52), the fixed mounting plate (5) is provided with a driving cylinder (51), and the driving mechanism comprises a driving cylinder (51) and an L-shaped mounting plate (52). ), an L-shaped mounting plate (52) is connected to the telescopic rod of the driving cylinder (51), and the L-shaped mounting plate (52) is slidably connected to the fixed mounting plate (5). The testing mechanism comprises an electric push rod (71), an extrusion rod (72), a guide rod (73), a guide block (74) and a push test plate (75). Two electric push rods (71) are installed on the fixed mounting plate (5), and an extrusion rod (72) is connected between the telescopic rods of the two electric push rods (71). A plurality of guide rods (73) are slidably connected to the L-shaped mounting plate (52) at even intervals, and a push test plate (75) is slidably connected to the guide rod (73). The guide rod (73) is connected to a guide block (74), and an oblique groove is provided on the guide block (74). The extrusion rod (72) passes through the oblique groove on the guide block (74).

2. A test device for LED screen production according to claim 1, characterized in that: The clamping mechanism comprises a fixed support seat (61), a clamping fixing plate (64) and a linear guide rod (65); the fixed support seat (61) is installed on the test frame (1); the upper part of the test frame (1) is connected to the linear guide rod (65); and the clamping fixing plate (64) is slidably connected to the linear guide rod (65).

3. A test device for LED screen production according to claim 2, characterized in that: The clamping mechanism also includes a threaded conveying rod (62) and a driving motor (63). The driving motor (63) is mounted on the test frame (1), the output shaft of the driving motor (63) is connected to the threaded conveying rod (62), and the clamping fixing plate (64) is threadably matched with the threaded conveying rod (62).

4. A test device for LED screen production according to claim 1, characterized in that: The testing mechanism also includes an elastic member 1 (76) and a pressure sensor (8); the push testing plate (75) is connected to the elastic member 1 (76); the guide rod (73) is connected to the pressure sensor (8); and one side of the elastic member 1 (76) is in contact with a sensing end of the pressure sensor (8).

5. The LED screen production test device according to claim 1, characterized in that: The invention also comprises a waste collection mechanism, the waste collection mechanism comprising a lamp bead collection frame (91), an arc-shaped guide frame (92), an expansion frame (93) and an air inlet connector (94); the lamp bead collection frame (91) is connected to the L-shaped mounting plate (52); the lamp bead collection frame (91) is connected to the arc-shaped guide frame (92); the feed end of the arc-shaped guide frame (92) is connected to the expansion frame (93); the expansion frame (93) is aligned with the bottom of the L-shaped mounting plate (52); and both sides of the lamp bead collection frame (91) are connected to the air inlet connector (94).

6. A test device for LED screen production according to claim 5, characterized in that: It also includes a lamp bead filter (95), and the lamp bead filter (95) is installed in the air inlet connector (94).

7. The LED screen production test device according to claim 1, characterized in that: A test gas spring (10) is also included, and the bottom of the L-shaped mounting plate (52) is connected to the test gas spring (10) at intervals.

8. The LED screen production test device according to claim 3, characterized in that: It also includes a rubber protective pad (11), and the rubber protective pad (11) is connected to the sides of the fixed support seat (61) and the clamping fixed plate (64) that are close to each other.

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